Replacement Toothbrush Heads Compatible with Philips Sonicare Toothbrush, 5300 7900 3100 4100 Plaque Defence Brush Head with Densely Clustered Bristles for Whiter Teeth - Standard Sonic Brush Heads x8

These are a great alternative, fit well! A little tight to begin with but do fit and work well with the power when one. Great value for money.

These are working really well. At first they are a little hard to get onto the main toothbrush. A slightly snug fit; however, once on, they work great, and I have no complaints. They clean well with bristles that are not too soft, but firm enough that i sense they will have good durability. The price i paid makes them very good value for money.

Standard replacement heads

They fit the Phillips sonic care perfectly at a much reduced price.

No problems

Within a week the bristles were falling out when brushing

these toothbrush heads are smaller than the one that was originally on the Philips Sonicare, fit alright and still do a job.

These are quite good but don't actually meet properly with the toothbrush, but perfectly functional

Alittle weak in design but works the same as original